Astros slugger Evan Gattis, who last year led the club in triples (11), homers (25) and RBIs (88), was activated from the disabled list following Houston’s 8-2 win over the Royals on Monday night. He will rejoin the club for Game 2 of the series on Tuesday. Infielder Matt Duffy was optioned to Triple-A Fresno to make room.